public static string ToUrlFormat(this System.Collections.Specialized.NameValueCollection Collection, IDictionary <string, string> FormatList, UrlEncodeType encodeType, Encoding encoding, bool KeepEmpty, out Dictionary <string, string> OverDict)
{
if (FormatList == null)
{
FormatList = new Dictionary <string, string>();
}
//首先获取全部Key
IEnumerable <string> FormatKey = FormatList.Keys.Tolower();
OverDict = new Dictionary <string, string>();
//把输入字典传进过滤字典里面,重复的不叠加
foreach (var ckey in Collection.AllKeys.Reverse())
{
if (ckey == null)
{
continue;
}
if (!FormatKey.Contains(ckey.ToLower()))
{
FormatList.Add(ckey, Collection[ckey]);
}
else
{
OverDict.Add(ckey, Collection[ckey]);
}
}
//倒转序列
var temp = FormatList.Reverse();
StringBuilder sb = new StringBuilder();
sb.Append("?");
if (temp.Count() == 0)
{
return("");
}
foreach (var item in temp)
{
if (item.Value == null)
{
if (!KeepEmpty)
{
sb.AppendFormat("{0}=&", item.Key);
}
continue;
}
if (item.Value.IndexOf("{0}") >= 0)
{
sb.AppendFormat("{0}={1}&", item.Key, item.Value.ToString()); continue;
}
switch (encodeType)
{
case UrlEncodeType.HtmlEncode:
sb.AppendFormat("{0}={1}&", item.Key, System.Web.HttpUtility.HtmlEncode(item.Value.ToString()));
break;
case UrlEncodeType.UrlEncode:
if (encoding != null)
{
sb.AppendFormat("{0}={1}&", item.Key, System.Web.HttpUtility.UrlEncode(item.Value.ToString(), encoding));
}
else
{
sb.AppendFormat("{0}={1}&", item.Key, System.Web.HttpUtility.UrlEncode(item.Value.ToString()));
}
break;
case UrlEncodeType.NoEncode:
sb.AppendFormat("{0}={1}&", item.Key, item.Value.ToString());
break;
}
}
return(sb.ToString());
}